Z fihliits-sheet



PATENTED JAN. 21, 1868.

P. FORMHALS.

MACHINE FOR COLLECTING AND CONDBNSING METALLIC VAPOR. I

2 SHEETS-SHEET 1.

No. 73,519. PATENTED JAN; 21, 1868.

. F. PORMHALS'.

MACHINE FOR COLLECTING AND OO'NDENSING METALLIC VAPOR.

. maxim-51mm 2 v. o i Q tut-eh tetra. gamut ffttz.

ERDINAND FVORMHALS, OF, SAN FRANCISCO, OALlFORNIA.

Letters Patent No. 73,519, dated January 21, 1868.- i

1 maovso mounts P011 GOLLEGTING AND oonnsms'mc METALLIC VAPORS.

fillge 533mb referral: to in time itelilrs fiienl animating wt nt lift-tame T0 WHOM THESE PRESENTS SHALL COME:

Be it known that I, FERDINAND FORMHALS, of the city and county of San Francisco, State of California, have made a new andrnseful invention for condensing the fumes oi -quicksilver, which I call the Cagniardelle- Draught and Subm erger, of which the following description, together with the accompanying drawings, and with the figures and letters thereon, will enable every one skilled in the art to manufacture and use the same,

The purpose of my invention is to construct a cagniard'ello principally of wood, to act as a draught-blower and submerger to produce a rapid and perfect oondensator of vapor by so cheap :1 process as to admit of working the poor qualities of cinnabar.

Figure 1 is a sectional view of the box. A, methllic cover; K, mandrel; B, spiral; C 0, space above the water;'E, pipe to tank; F, tanks; G G, pulley; H'I, furnace; J, pipefrom'furnaee.

Figure 2, boxelosed. D, jacket; K, metallic cover; J, pipe to'furnaoe; H, driving-pulley.

Figure 3, end view of spiral. I v This spiral is formed of thin' layers of wood, or in such'a manner as to get the desired pitch to produce the greatest amount of power in the machine, and to submerge the vapor in the tanks in a similar manner to washing gases, by bringing the fumes frequently-in contact with andpassing through water. i

1. I claim the construction of the'cagniardelle-blower principally of wood.

2. I claim the combination of the cagniardelle with the furnace, in combination with tanlrs, substantially as set forth and shown, and for the purposes specified.

San Francisco, November, 1867. I

, FERDINAND FORMHALS.

Witnesses! Jossrn H. ATKINSON, A. RossNFmLn. 

